Need help matching the transition animations for custom navbar elements

Site URL: http://empiricalwisdom.com

Hello! 

I am currently using the dynamic style sticky header and some CSS I found to customize the navbar on scroll for certain pages on my site. When first loaded, the navbar is transparent with white text. Then on scroll, the navbar gets a solid white background, and the site title + navigation links change to black.

However, the color of the site title and nav links seems to change to black faster than the white background appears, which looks quite clunky. Does anyone how I can achieve a matching transition animation for both the white background and the changing  text color so that it looks smoother? Would really appreciate any help 🙂 Here's the CSS I'm currently using:

<style>

.tweak-fixed-header .shrink.header {
  background: #FFF !important;
}
  
.tweak-fixed-header .shrink.header .header-nav-wrapper a {
  color: #000 !important;
}

.tweak-fixed-header .shrink.header #site-title {
  color: #000 !important;
}
 
#header.shrink .burger-inner>div {
  background-color: black !important;
}
  
</style>

Leaving this up in case anybody else has this same problem. I fixed it by adding this code to each of the changes above:

transition: .3s ease-out;

For example:

.tweak-fixed-header .shrink.header {
  background: #FFF !important;
  transition: .3s ease-out;
}

Hope this helps 🙂